<p>Valid nesting:</p>

<p><strong><a href="url">Link</a></strong></p>

<p><a href="url"><strong>Link</strong></a></p>

<p><strong><a href="url"><strong>Link</strong></a></strong></p>

<p>Invalid nesting:</p>
        
<pre>
<code>
#commented out
[[Link](url)](url)
</code>
</pre>
